I called the broker, myTrack; actually I think TRACK is their own ECN. They told me that the rebate is .002 but up to .005 after volume rebate.

I asked if there's any volume rebate for someone trading about 1000 shares at most, and they said no.

So I figure, I'll get .002 at most. Anyway, do u get TRACK rebates? How often? Once again, is it worth enabling TRACK on the smart routing? (the charge is .007 for orders taking away liquidity from TRACK.)